Within the Disney empire, Tim Onosko was known as the go-to guy for the future. By often accurately forecasting how technology would alter the entertainment landscape, he developed a reputation as a high-tech soothsayer. At Disney, he helped refine the newly opened Epcot in Florida in the 1980s by steering the theme park's designers toward cutting-edge gadgets. He also played a more ethereal role: By celebrating what technology could do, according to company executives, Onosko helped the engineers and designers known as Imagineers lose their fear of stepping into the future. Onosko, who also was a journalist and filmmaker, died March 6 at his home in Madison, Wis., after battling pancreatic cancer, said his wife, Beth Abrohams. He was 60.